INSTRUCTIONS:Combine potatoes, egg, onions, and celery. Stir in mayonnaise, mustard, and salt and pepper to taste. (Stir the mayonnaise and mustard in a little at a time, until you have the flavor and consistency you like.)Top with thinly sliced tomatoes and cucumber, if desired. The potato salad recipe is ready to serves 6 to 8 great persons....nice one !